Perhaps you should try some spelling variations:
thieu ngan » thieu nien, thu ngan, thi ngan
hoc thieu » toc thieu, hoc hien
trinh cua » trinh luat, trinh quan, trinh luan
dang cong » dung cong
van thanh » ban thanh, van tuan
tinh cua » sinh cua, tinh chat, tranh cua
dan toan » van toan, dan than, manh toan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu ngan - hanh ((trinh cua) or (tinh cua)) dang cong ((dan toan) or (van thanh)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu ngan - hanh ((trinh cua) OR (tinh cua)) dang cong ((dan toan) OR (van thanh)) tap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu ngan - hanh ((trinh cua) or (tinh cua)) dang cong ((dan toan) or (van thanh)) tap*.